How do I write a bash shell script that encrypts a file by changing every letter except z to the next character in the alphabet. So a becomes b, b becomes c, and so on? z will be changed to a.
Also, how do I write a bash shell script that reverses that?
echo filename | tr '[a-z]' '[b-za]'
where tr stands for transliterates.
tr transliterates all input 'a' characters to 'b', 'b' to 'c', 'c'
to 'd', etc
How do I write a bash shell script that encrypts a file by changing every letter...
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